Automatically processible photographic element comprising a non-silver halide layer containing bromide
US4794070A · kind A · utility
1Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1987 |
| Grant date | Dec 27, 1988 |
| Priority date | — |
| Expiry date | Jun 9, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/167
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Automatic processing equipment for photographic film, particularly radiographic black-and-white film, are required to handle different brands and constructions of film with the same processing chemistry. The Applicants have found that developer chemistry fluctuations seem to be very high when processing conventional films and newer, lower silver coating weight films. It has been found that the addition of an aqueous soluble, non-photosensitive bromide salt into radiographic film reduces the developer chemistry fluctuations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.